Stockmarket Loans: broker margin rates

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Published US broker margin rates by tier, ranked at any balance, with borrowing-cost math.

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borrowing_cost Read-only

What a margin loan costs over a number of months at every compared broker's published rate, as the site's margin interest calculator works it: rate, interest per month, total over the period and the extra cost versus the lowest rate, simple interest on a flat balance. Optionally adds a rate you were quoted (an SBLOC offer or a negotiated margin rate) or narrows the table to one broker.

balancenumber, required

Amount borrowed in US dollars, e.g. 250000.

brokerstring

Optional: show only this broker (plus the lowest rate and any quoted rate), e.g. "Schwab".

monthsinteger

How many months the balance is held, 1 to 120. Default 12.

quoted_ratenumber

Optional annual rate in percent you were quoted, e.g. 6.5, ranked beside the brokers.

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borrowing_cost

read-only

Argument	Type	Description
broker	string	Optional: show only this broker (plus the lowest rate and any quoted rate), e.g. "Schwab".
months	integer	How many months the balance is held, 1 to 120. Default 12.
balance*	number	Amount borrowed in US dollars, e.g. 250000.
quoted_rate	number	Optional annual rate in percent you were quoted, e.g. 6.5, ranked beside the brokers.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "balance"
  ],
  "properties": {
    "broker": {
      "type": "string",
      "maxLength": 60,
      "minLength": 2,
      "description": "Optional: show only this broker (plus the lowest rate and any quoted rate), e.g. \"Schwab\"."
    },
    "months": {
      "type": "integer",
      "default": 12,
      "maximum": 120,
      "minimum": 1,
      "description": "How many months the balance is held, 1 to 120. Default 12."
    },
    "balance": {
      "type": "number",
      "maximum": 1000000000,
      "minimum": 1,
      "description": "Amount borrowed in US dollars, e.g. 250000."
    },
    "quoted_rate": {
      "type": "number",
      "maximum": 40,
      "minimum": 0.01,
      "description": "Optional annual rate in percent you were quoted, e.g. 6.5, ranked beside the brokers."
    }
  },
  "additionalProperties": false
}

compare_brokers

Every compared broker's published annual margin rate on one loan balance, ranked from lowest to highest (ties shared), with the tier that applies, the yearly interest at that rate, schedule dates and source links. Brokers that print no rate at that balance are listed separately with the reason.

read-only

Argument	Type	Description
balance*	number	Margin loan (debit balance) in US dollars, e.g. 100000.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "balance"
  ],
  "properties": {
    "balance": {
      "type": "number",
      "maximum": 1000000000,
      "minimum": 1,
      "description": "Margin loan (debit balance) in US dollars, e.g. 100000."
    }
  },
  "additionalProperties": false
}

get_margin_rates

One broker's published margin rate schedule: every balance tier with its annual rate and the broker's own wording for how it is set, the base rate and its date, whether tiers blend, maintenance and minimum-equity notes, the schedule date, our check date and the broker's source URL. A family name like "Interactive Brokers" returns each of its plans.

read-only

Argument	Type	Description
broker*	string	Broker name, e.g. "Schwab", "Fidelity", "Interactive Brokers", "Robinhood".

Input schema (JSON)

{
  "type": "object",
  "required": [
    "broker"
  ],
  "properties": {
    "broker": {
      "type": "string",
      "maxLength": 60,
      "minLength": 2,
      "description": "Broker name, e.g. \"Schwab\", \"Fidelity\", \"Interactive Brokers\", \"Robinhood\"."
    }
  },
  "additionalProperties": false
}

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borrowing_cost Read-only

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borrowing_cost Read-only

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Tools (3)

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